Lutron Electronics SL-4010 User manual

SOUND LEVEL

METER

Model : SL-4010

Your purchase of this

SOUND LEVEL METE

marks a step forward for

you into the field of

precision measurement.

Althou

h this METER is a

complex and delicate

instrument, its durable

structure will allow many

years of use if proper

operatin

techniques are

developed. Please read

the followin

instructions

carefully and always keep

this manual within easy

reach.

OPERATION MANUAL

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TABLE

CONTENTS

1. FEATURES...............................................................1

2. SPECIFICATIONS..................................................... 1

3. FRONT PANEL DESCRIPTION....................................3

3-1 Electric condenser microphone...........................3

3-2 Display............................................................. 3

3-3 Range upper / lower indicator............................3

3-4 Range switch.................................................... 3

3-5 External calibration VR......................................

3-6 Power OFF/ON/Hold switch................................3

3-7 Battery compartment / Cover.............................3

4. MEASURING PROCEDURE.........................................4

5. REPLACEMENT of BATTERY......................................4

6. CALIBRATION .........................................................5

7. FREQUENCY WEIGHTING CHARACTERISTICS

OF " A " NETWORKS................................................

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1. FEATURES

* Large LCD display, easy to read.

* Characteristic of " A " frequency weighting network are

designed to meet IEC 61672 class 2.

* " Fast " time weighting characteristic mode.

* Build in adj. VR is available for easy calibration.

* Condenser microphone for high accuracy & long-term

stability.

* Hold function to freeze the display value.

* Warning indicator for over and under range.

* LCD display for low power consumption & clear

read-out even in bright ambient light condition.

* Used the durable, long-lasting components, including a

strong, light weight ABS-plastic housing case.

* Small and light weight design allow one hand operation.

* Low battery indicator.

* High quality with economical cost.

2. SPECIFICATIONS

Display 18 mm ( 0.7" ) LCD ( Liquid Crystal

Display ), 3 1/2 di

its.

Measurement

35 to 130 dB, 3 ran

es :

Ran

eran

e 1 - 35 to 80 dB,

ran

e 2 - 50 to 100 dB,

ran

e 3 - 80 to 130 dB,

*Eachran

e with warnin

indicator for

over & under load.

Resolution 0.1 dB.

Measurement 31.5 Hz to 8,000 Hz.

Frequency

Frequency Characteristics of " A " frequency

Wei

htin

wei

htin

network.

*The"Awei

htin

" characteristic is

simulated as "Human Ear Listin

response.

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Time Wei

htin

Default to " Fast " time wei

htin

characteristics.

* " Fast time wei

htin

" is simulated the

human ear response character.

Accuracy Characteristics of " A " frequency

(

23± 5

)

℃

wei

htin

network meet IEC 61672

class 2.

Under 94 dB input si

nal, the accuracy

are :

31.5 Hz ± 3.5 dB

63 Hz ± 2.5 dB

125 Hz ± 2.0 dB

250 Hz ± 1.9 dB

500 Hz ± 1.9 dB

Hz ± 1.4 dB

Hz ± 2.6 dB

Hz ± 3.6 dB

Hz ± 5.6 dB

Remark :

he above spec. are tested under th

environment RF Field Strength less tha

3 V/M & frequency less than 30 MH

only.

Calibrator B & K (Bruel & k

aer), multi-fuction

acoustic calibrator, model : 4226.

Microphone Electric condenser microphone.

Size of microphone 1/2 inch standard size.

Calibration VR Build in external calibration VR, easy to

calibrate on 94 dB level by screw driver.

Data Hold Hold function to freeze the display value.

Operatin

Temp. 0 to 50 ( 32 to 122 ).℃℉

Operatin

Humidity Less than 80% RH.

Power Supply

Alkaline or Heavy duty type, 9V d.c.

006 P, MN1604(PP3) or equivalent.

Power Consumption Approx. DC 6 mA.

Dimension 250 x 70 x 28 mm ( 9.9 x 2.8 x 1.1 inch ).

Wei

ht 250

/0.55 LB ( includin

battery ).

Standard Instruction Manual ...................... 1 PC.

Accessories

Optional 94 dB Sound Calibrator,

Accessories Model : SC-941, SC-942.

Hard carryin

case, Model : CA-06.

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3. FRONT PANEL DESCRIPTION

3-1 Electric condenser microphone

3-2 Display

3-3 Range upper / lower indicator

3-4 Range switch

3-5 External calibration VR

3-6 Power ON/OFF/Hold switch

" 1 " = Power ON " 0 " = Power OFF

3-7 Battery compartment / Cover

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4. MEASURING PROCEDURE

1)Slide the " Power ON/OFF/Hold switch " ( 3-6, Fig. 1 ) to

the " 1 " position will power on the meter.

" 1 " = Power ON. " 0 " = Power OFF.

2)Determine proper measuring range by selecting the

" Range switch " ( 3-4, Fig. 1 ) to minimize the tolerance of

readout. When left corner of LCD show " "

( Range upper / lower indicator, 3-3, Fig. 1 ), it shows

the dB range selection is upper or lower setting. Slide

range switch to other range for measuring.

3)Hold the instrument in hand and point the microphone at

measured noise source, the sound level will be displayed

on " dB " ( decibel) unit.

4)During the measurement, if slide the " Power

ON/OFF/Hold switch " ( 3-6, Fig. 1 ) to the " Hold "

position will freeze the display value. If slide the

" Power ON/OFF/Hold switch " ( 3-6, Fig. 1 ) to the " 1 "

position. then the display will make the measurement

continually.

5. REPLACEMENT OF BATTERY

1)When the left corner of LCD display show " BAT ",

it indicate a normal battery output of less than

6.5 V - 7.5 V. It is necessary to replace the battery.

However, in-spec. measurement may still be made for

several hours after LOW BATTERY INDICATOR

appears before the instrument become inaccurate.

2)Slide the Battery Cover ( 3-7, Fig. 1 ) & take the battery

away from the battery compartment..

3)Replace with 9V battery ( Alkaline or Heavy duty type,

006 P, MN1604/PP3 or equivalent ) and reinstate the cover.

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6. CALIBRATION

The sound level meter is built in the internal

" External calibration VR " ( 3-5, Fig. 1 ) on the front

panel.

Please according the following procedures to calibrate

the instrument accurately, if it is necessary.

1) Prepare the optional " SOUND CALIBRATOR, model:

SC-941, SC-942 or other equivalent sound calibrator.

Power on the Sound Calibrator & plug calibrator output

into the " Electric condenser micro- phone " ( 3-1, Fig. 1 )

of the Sound Level Meter.

2) Slide the " Range switch " ( 3-4, Fig. 1 ) to " 50 - 100 dB "

position.

3) Carefully adjust the " Calibration VR " ( 3-5 ) with " - "

screw driver, until the display read within " 94.0 ± 0.2 " dB.

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7. FREQUENCY WEIGHTING

CHARACTERISTICS OF " A "

NETWORKS

Frequency A Weighting Tolerance

Hz Character (IEC 61672 class 2)

31.5 -39.4 dB ± 3.5 dB

63 -26.2 dB ± 2.5 dB

125 -16.1 dB ± 2.0 dB

250 -8.6 dB ± 1.9 dB

500 -3.2 dB ± 1.9 dB

1 K 0 dB ± 1.4 dB

+1.2 dB ± 2.6 dB

+1 dB ± 3.6 dB

-1.1 dB ± 5.6 dB

60711-sl4010

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